Dendrographa latebrarum (Ach.) Ertz & Tehler

Fungal Divers., 49: 53, 2011. Basionym: Lichen latebrarum Ach. - Lichenogr. Suec. Prodr.: 7, 1799.
Synonyms: Crocynia albissima B. de Lesd.; Crocynia fragilissima Hue; Crocynia hueana B. de Lesd.; Crocynia latebrarum (Ach.) Vain.; Lecanactis latebrarum (Ach.) Arnold; Lepra candida auct. p.p.; Lepraria latebrarum Ach.
Distribution: N - Frl (Tretiach 2004), TAA (Egea & Torrente 1994), Lomb (UPS-L-176219).
Description: Thallus crustose to subleprose, episubstratic, greyish white, sometimes pale brown- or rose-tinged, composed of irregular to somewhat flattened aggregations of soredia and hyphae heavily incrusted by crystals, forming up to 5 mm thick and to 1 cm wide, soft, cottony, convex cushions; prothallus visible only in young, thinner thalli, usually whitish to pale brown. Medulla of colourless hyphae densely covered in plate-like crystals visible under polarized light. Apothecia and pycnidia not known. Photobiont trentepohlioid. Spot tests: thallus K-, C-, KC-, P-; medulla and soralia UV+ pale blue. Chemistry: lepraric acid (major), plus variable amounts of roccellic acid, and ‘latebrarum unknown’.
Note: a mainly temperate species found beneath underhangs and in crevices of siliceous rocks which are seldom wetted by rain, much more rarely on old trunks of Quercus.
Growth form: Leprose
Substrata: rocks
Photobiont: Trentepohlia
Reproductive strategy: mainly asexual, by soredia, or soredia-like structures (e.g. blastidia)
In underhangs rarely wetted by rain

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: absent
Oromediterranean belt: absent
Montane belt: very rare
Submediterranean belt: very rare
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent

pH of the substrata:


Solar irradiation:








Altitudinal distribution:


Predictive model
Herbarium samples

E. Pittao CC BY-SA 4.0
TSB 36068

Pier Luigi Nimis CC BY-SA 4.0
TSB 41615

E. Pittao CC BY-SA 4.0.
TSB 36068

E. Pittao CC BY-SA 4.0.
TSB 36068

E. Pittao CC BY-SA 4.0.
TSB 36068

Einar Timdal - Source: - CC BY-NC

E. Pittao CC BY-SA 4.0.
TSB 36442